Start menu items for KiCad-nightly dissapeared in latest nigtly.

In the latest -nightly of both “kicad” and “pcbnew” disappeared when searching though the start menu. (After a normal "sudo apt upgrade"). Eeschema is still present for both the stable and -nightly.

I was asked on the user forum to report this: https://forum.kicad.info/t/is-there-a-problem-with-kicad-nightly-ppa/27141/6

Note that I run Linux Mint.

Application: KiCad

Version: 5.99.0-unknown-886cad43bd~114~ubuntu20.04.1, release build

Libraries:
	wxWidgets 3.0.4
	libcurl/7.68.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.3/openssl/zlib nghttp2/1.40.0 librtmp/2.3

Platform: Linux 5.4.0-64-generic x86_64, 64 bit, Little endian, wxGTK, mate, x11

Build Info:
	Date: Jan 27 2021 08:10:07
	wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
	Boost: 1.71.0
	OCC: 7.3.0
	Curl: 7.68.0
	ngspice: 31
	Compiler: GCC 9.3.0 with C++ ABI 1013

Build settings:
	KICAD_SCRIPTING=ON
	KICAD_SCRIPTING_MODULES=ON
	KICAD_SCRIPTING_PYTHON3=ON
	KICAD_SCRIPTING_WXPYTHON=ON
	KICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
	KICAD_SCRIPTING_ACTION_MENU=ON
	KICAD_USE_OCC=ON
	KICAD_SPICE=ON